Difference between revisions of "Run Planning Meeting Notes, Mar 14 - Mar 20, 2019"

Revision as of 08:34, 18 March 2019

• Run_Coordination_Meetings:Spring2019_Run
• PrimEx daily meeting
• PrimEx-η run plan
• Production runs, number of triggers
• Trigger counter
• To join via a Web Browser, go to the page https://bluejeans.com/660743227

Monday, Mar. 18 at 08:45

1. Past 48 hours:
   • Production running
   • Emptied target at 3:30pm Sunday
   • Attempted TAC run but beam position was too unstable[1].
2. Issues
   • Short access Friday evening due to PS/ST problems. Vlad saw 2 of these alarms yesterday evening.
   • https://logbooks.jlab.org/entry/3668691 Bubbler in gas shed needs to be filled]
   • Target temperature continues to rise over 100K.
3. Reports
   • Daily FCAL update
   • Daily compcal RF timing discussion
4. Today
   • Halls B and D only halls at 5 pass. We're both at low current and MCC can not see the beam in the machine, only when it enters our halls. Beam trips may take a little longer to recover, so they asked for us to be patient.
   • MCC looking into noisy BPMs (calibration issue?). They're looking into this now.

1. Run Plan
   • Empty target running with standard production setup.
   • What else can be done about the beam position to ensure a successful TAC run?

Friday, Mar. 15 at 08:45

1. Past 24 hours:
   • Short access after meeting
   1. • Beni/Tim: adjust rotometer flow to 1 L/hr
      • Sergey and Hovanes: DAQ
      • logbook entry Chris, Colin, Nick, Sasha: FCAL VME crate 11 power supply/ fan issue
   • gluon01 is back with a new kernel and graphics driver
   • Production running
2. Issues
   • Problematic FCAL channels near beamline
   1. • One base lost connection and was recovered by power cycling the power supply. This happens 1-2 times per week. Right now I (Colin) am the only one capable of doing this. Need to train more people how to spot and fix these errors. It is a relatively simple process, but one that should not be left to the shift crew.
      • One base lost HV near beam line.Follow up. Access to replace after morning meeting. Friendly reminder: please do not call Colin at night about base problems. Emails and texts are fine.
   • Monitoring problem with file/DB management. Usually does not happen
   • David and Thomas looking into CCAL pedestal Rootspy issue. Appears to be a Rootspy display issue and Dave will investigate more next week.
3. Reports
   • FCAL scalers since LHe target switchover (follow up from disconnected crates)
   • Topic of the week: CCAL shower time - RF time (Beni)
4. Today:
   • Production: 200nA, Al 10^-4
5. Run Plan
   • Production running
   • TAC run
   • Hall A performing beam modulation studies Tuesday owl shift. Will cause 1 MeV fluctuations in beam energy. They will do a test Monday morning from 8-9am.

Thursday, Mar. 14 at 08:45

1. Past 24 hours:
   • Production running
2. Issues
   • RootSpy Problem with CCAL Pedestal Histograms
   • Hall D y position variation from Jay. Beam position variation not related to dispersion.12
   • Console 1 frozen. Who knows how to reboot?
3. Reports
   • Rate monitoring (Alexandre)
   • FCAL shift in simulation (Liping)
   • Beni really wanted to conitune our discussion yesterday on histogram binning (Beni)
4. Today:
   • Production: 200nA, Al 10^-4
5. Run Plan
   • Production running
   • Hall C goes down Sunday at 4pm. Postpone TAC run until Monday unless there are objections.
     • There are parity quality beam testes (PQB) scheduled for Hall A Monday and Tuesday, but this should not affect the beam delivered to us.
   • RF Recovery scheduled for Wednesday